S100A8 and MALT lymphoma: Based on the results of statistical analysis, no association was observed between cagA status and gastric MALT lymphoma (OR 1.00; 0.715–1.419 with 95% CIs; p value: 0.968; I2: 83.52; Q-value: 54.61; p value: 0.01; Egger’s p value: 0.36; Begg’s p value: 0.28) following long-term H. pylori infection (Fig. 2).